Alert archive / Illinois / Tornado Warnings in 2015

Tornado Warning 20, NWS Lincoln, IL

December 23, 2015Cass County, Morgan County, Scott County, Illinois

NWS Lincoln, IL issued this tornado warning at Dec 23, 2015, 4:16 PM CST for Cass County, Morgan County, Scott County, Illinois. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Dec 23, 2015, 4:16 PM CST (22:16 UTC)
Expired: Dec 23, 2015, 4:45 PM CST
In force: 29 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Cass County, IL, Morgan County, IL, Scott County, IL

The radar

The Lincoln radar (KILX), 106 km from the middle of the area, began a volume at 22:15 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Dec 23, 1:55 PM CST	Tornado Watch	SPC	4 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 10.3 hours before the alert went out and 167 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 12 J/kg
Mixed-layer CIN: -75 J/kg
Mixed-layer LCL: 465 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 260 m²/s²
0-3 km storm-relative helicity: 212 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

112 
WFUS53 KILX 232216
TORILX
ILC017-137-171-232245-
/O.NEW.KILX.TO.W.0020.151223T2216Z-151223T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
416 PM CST WED DEC 23 2015

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN SCOTT COUNTY IN WEST CENTRAL ILLINOIS...
  NORTHWESTERN MORGAN COUNTY IN WEST CENTRAL ILLINOIS...
  SOUTHWESTERN CASS COUNTY IN WEST CENTRAL ILLINOIS...

* UNTIL 445 PM CST

* AT 415 PM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED OVER NAPLES...OR 12 MILES NORTHEAST OF
  PITTSFIELD...MOVING NORTHEAST AT 50 MPH.

  HAZARD...TORNADO AND QUARTER SIZE HAIL. 

  SOURCE...WEATHER SPOTTERS REPORTED FUNNEL CLOUD. 

  IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
           SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. 
           DAMAGE TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR.  TREE 
           DAMAGE IS LIKELY. 

* LOCATIONS IMPACTED INCLUDE...
  MEREDOSIA...ARENZVILLE...NAPLES AND LA GRANGE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN A
MOBILE HOME...OR IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3974 9062 3983 9057 3984 9057 3987 9059
      3992 9054 3994 9054 3997 9051 3999 9051
      4001 9046 3987 9030
TIME...MOT...LOC 2215Z 233DEG 43KT 3974 9066 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

BARKER

2 follow-up statements

095 
WWUS53 KILX 232230
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
430 PM CST WED DEC 23 2015

ILC171-232240-
/O.CAN.KILX.TO.W.0020.000000T0000Z-151223T2245Z/
SCOTT-
430 PM CST WED DEC 23 2015

...THE TORNADO WARNING FOR NORTHWESTERN SCOTT COUNTY IS CANCELLED...
    
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT
OF THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CST FOR WEST CENTRAL
ILLINOIS.

LAT...LON 3980 9051 3983 9053 3992 9054 3994 9054
      3997 9051 3999 9051 4001 9046 3987 9030
TIME...MOT...LOC 2230Z 233DEG 43KT 3985 9047 

$$

ILC017-137-232245-
/O.CON.KILX.TO.W.0020.000000T0000Z-151223T2245Z/
MORGAN-CASS-
430 PM CST WED DEC 23 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM CST FOR
NORTHWESTERN MORGAN AND SOUTHWESTERN CASS COUNTIES...
        
AT 430 PM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR MEREDOSIA...OR 11 MILES SOUTH OF BEARDSTOWN...MOVING
NORTHEAST AT 50 MPH.

HAZARD...TORNADO AND QUARTER SIZE HAIL. 

SOURCE...WEATHER SPOTTERS REPORTED A FUNNEL CLOUD. 

IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
         SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE 
         TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR.  TREE DAMAGE IS 
         LIKELY. 

LOCATIONS IMPACTED INCLUDE...
ARENZVILLE AND LA GRANGE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN A
MOBILE HOME...OR IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3980 9051 3983 9053 3992 9054 3994 9054
      3997 9051 3999 9051 4001 9046 3987 9030
TIME...MOT...LOC 2230Z 233DEG 43KT 3985 9047 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

BARKER

326 
WWUS53 KILX 232246
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
446 PM CST WED DEC 23 2015

ILC017-137-232255-
/O.EXP.KILX.TO.W.0020.000000T0000Z-151223T2245Z/
MORGAN-CASS-
446 PM CST WED DEC 23 2015

...THE TORNADO WARNING FOR NORTHWESTERN MORGAN AND SOUTHWESTERN CASS
COUNTIES HAS EXPIRED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER APPEARS CAPABLE OF PRODUCING A TORNADO.
THEREFORE THE WARNING HAS BEEN ALLOWED TO EXPIRE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CST FOR WEST CENTRAL
ILLINOIS.

LAT...LON 3980 9051 3983 9053 3992 9054 3994 9054
      3997 9051 3999 9051 4001 9046 3987 9030
TIME...MOT...LOC 2244Z 233DEG 43KT 3985 9047 

$$

BARKER

The office that day

Everything else NWS Lincoln, IL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 23, 9:04 AM CST	Special Weather Statement	ILX	McLean	41 min
Dec 23, 9:16 AM CST	Special Weather Statement	ILX	Christian, Macon, Shelby	29 min
Dec 23, 9:20 AM CST	Severe Thunderstorm Warning	ILX	McLean	25 min
Dec 23, 9:31 AM CST	River Flood Warning	ILX	Clay, Richland	12 days
Dec 23, 9:48 AM CST	Severe Thunderstorm Warning	ILX	Coles, Cumberland, Douglas, Macon, Moultrie, Piatt and 1 more	27 min
Dec 23, 10:10 AM CST	Special Weather Statement	ILX	McLean	35 min
Dec 23, 11:15 AM CST	Special Weather Statement	ILX	Jasper	45 min
Dec 23, 11:44 AM CST	Severe Thunderstorm Warning	ILX	Clark, Crawford, Jasper	31 min
Dec 23, 11:59 AM CST	Severe Thunderstorm Warning	ILX	Clay, Effingham, Jasper, Richland	31 min
Dec 23, 12:41 PM CST	Severe Thunderstorm Warning	ILX	Crawford, Lawrence, Richland	34 min
Dec 23, 2:10 PM CST	Wind Advisory	ILX	Cass, Champaign, Christian, DeWitt, Fulton, Knox and 16 more	9 hr
Dec 23, 3:44 PM CST	Severe Thunderstorm Warning	ILX	Schuyler	46 min
Dec 23, 4:28 PM CST	Severe Thunderstorm Warning	ILX	Fulton, Schuyler	31 min
Dec 23, 5:08 PM CST	Tornado Warning	ILX	Knox	20 min

Nearby

Tornado Warnings in Illinois, 2015 Every tornado warning in 2015 Tornadoes in 2015

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.